ISO 27001 is the international standard for information security management, and the most rapidly growing certification requirement in UK enterprise and public-sector procurement. If your sales process consistently stalls at the security questionnaire stage, this is where that friction ends.
What is ISO 27001 and why does your business need it?
ISO/IEC 27001:2022 provides a framework for systematically identifying information security risks and implementing controls to manage them. It covers the confidentiality, integrity and availability of information assets — from customer data and intellectual property to IT systems and supply-chain access.
UK businesses pursue ISO 27001 for enterprise procurement requirements (a single certificate replaces hundreds of questionnaire hours), public sector and defence supply chain (DEFCON 658, NHS frameworks) and regulatory alignment with UK GDPR and the Cyber Governance Code of Practice.
ISO 27001 vs Cyber Essentials: which does your business need?
| Cyber Essentials | ISO 27001 | |
|---|---|---|
| Scope | 5 basic technical controls | Full information security management system |
| Assessment | Self-assessment + scan | Full independent audit |
| UK government contracts | Personal-data contracts | Higher-risk contracts |
| Time to achieve | 4–8 weeks | 6–14 months |
| Annual cost | £300–£500 | From £1,400/year (UniCert) |
| Recognition | UK-focused | International |
For most UK businesses targeting both public-sector and enterprise clients, holding both is the most commercially effective position. Cyber Essentials gets you to the starting line; ISO 27001 takes you to the front.
How much does ISO 27001 certification cost?
| Company size | Annual certification fee |
|---|---|
| Under 10 employees | From £1,400/year |
| 11–50 employees | From £2,200/year |
| 51–200 employees | From £3,500/year |
| 200+ employees | Contact us |
